Protocols And Standards; Igmp Snooping Configuration Task List - HP FlexFabric 5700 Series Configuration Manual

When the switch receives an IGMP leave message on a dynamic member port, the switch first examines
whether a forwarding entry matches the group address in the message.
If no match is found, the switch discards the IGMP leave message.
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If a match is found but the receiving port is not in the forwarding entry, the switch discards the IGMP
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leave message.
If a match is found and the receiving port is in the forwarding entry, the switch forwards the leave
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message to all router ports in the VLAN. The switch does not immediately remove the port from the
forwarding entry for that group. Instead, it adjusts the aging timer for the port.
After receiving the IGMP leave message, the IGMP querier resolves the multicast group address in the
message. Then, it sends an IGMP group-specific query to the multicast group through the port that
received the leave message.
After receiving the IGMP group-specific query, the switch forwards the query through all its router ports
in the VLAN and all member ports of the multicast group. Then, it waits for the responding IGMP reports
from the directly connected receivers. For the member port that received the leave message, the switch
performs one of the following actions:
If the port receives an IGMP report before the aging timer expires, the switch restarts the aging timer
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for the port.
If the port does not receive an IGMP report when the aging timer expires, the switch removes the
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port from the forwarding entry for the multicast group.

Protocols and standards

RFC 4541, Considerations for Internet Group Management Protocol (IGMP) and Multicast Listener
Discovery (MLD) Snooping Switches

IGMP snooping configuration task list

Tasks at a glance
Configuring basic IGMP snooping
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(Required.)
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(Optional.)
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(Optional.)
Configuring IGMP snooping port
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(Optional.)
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(Optional.)
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(Optional.)
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(Optional.)
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(Optional.)
Configuring the IGMP snooping
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(Optional.)
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(Optional.)
Configuring parameters for IGMP
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(Optional.)
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(Optional.)
features:
Enabling IGMP snooping
Specifying an IGMP snooping version
Setting the maximum number of IGMP snooping forwarding entries
features:
Setting aging timers for dynamic ports
Configuring static ports
Configuring a port as a simulated member host
Enabling fast-leave processing
Disabling a port from becoming a dynamic router port
querier:
Enabling the IGMP snooping querier
Configuring parameters for IGMP queries and responses
messages:
Configuring source IP addresses for IGMP messages
Setting the 802.1p priority for IGMP messages
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